– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Thu 01 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Thu 01 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 4mm), mostly falling on Thu night. Warm (max 22°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 18°C on Mon afternoon, min 10°C on Tue morning). Wind will be generally light. | |||||||||||||||
Friday 2 | Saturday 3 | Sunday 4 | Monday 5 | Tuesday 6 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  | | |  | | | | | | | |
light rain | rain shwrs | rain shwrs | rain shwrs | some clouds | clear | clear | clear | clear | some clouds | clear | clear | some clouds | some clouds | some clouds | some clouds | |
Cloud base (m) | 1550 | 750 | 700 | 5900 | 9200 | 6500 | 6500 | 7050 | 6650 | 5250 | 3500 | |||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 1.7 | 1.1 | 1.3 | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 15 | 15 | 15 | 14 | 18 | 21 | 17 | 20 | 22 | 17 | 17 | 18 | 13 | 14 | 15 | 12 |
min °C | 14 | 14 | 15 | 13 | 14 | 21 | 16 | 16 | 21 | 14 | 13 | 17 | 11 | 10 | 14 | 11 |
chill °C | 14 | 14 | 15 | 13 | 14 | 21 | 16 | 16 | 21 | 14 | 13 | 17 | 11 | 10 | 14 | 11 |
Freezing level m | 3150 | 2950 | 2950 | 3900 | 3950 | 4100 | 4100 | 4000 | 4000 | 3850 | 3400 | 3250 | 3250 | 3400 | 3400 | 3200 |
 | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — |
 | — | — | 6:45 | — | — | 6:43 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 4mm), mostly falling on Thu night. Warm (max 22°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 18°C on Mon afternoon, min 10°C on Tue morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | | ||||
Abbotsford Airport |  | ||||
BUOY-PBFW1 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.